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La investigacion tuvo como objetivo principal determinar la ecuacion modelo operacional aplicando el principio de balance de materia en estado no estacionario. Para la representacion del proceso se utilizo un tanque con agua el cual simulada el caudal de entrada al tanque que contenia una solucion concentrada de 33° Brix, y de este se desprendia un caudal de salida a un tercer tanque. Las muestras se recolectaron del caudal de salida del segundo tanque en un rango de tiempo de 30 segundos, obteniendo un total de 20 muestras, luego se evaluo su concentracion en °Brix analizando en el laboratorio. En la parte operacional se aplica un balance de materia en estado estacionario donde se determino la ecuacion modelo donde al aplicar el tiempo en el cual se recolecto la muestra se determinaba su concentracion en °Brix. Se analizo los datos arrojados por analisis de laboratorio y los obtenidos por aplicacion de la ecuacion modelo en el programa estadistico Statgraphics Centurion XVI.I, el cual determino que no existio diferencia significativa entre cada uno de los datos estudiados. La ecuacion modelo establecida  para determinacion de la concentracion de una sustancia resulto util en al investigacion y  para su aplicacion en futuros estudios. Abstract The aim of the present research work was to determine mathematical model of the operational equation applying non-stationary state material balance principle. A tank filled with water was used for the representation of the mechanical process, which simulated an input flow to a tank containing a 33° Brix sucrose concentrated solution, from where an output flow to a third tank was released. The samples were collected from the second tank output flow in time ranges of thirty seconds; a total number of twenty samples were obtained. For each sample, concentration in means of °Brix, was registered in laboratory facilities. In the operational part of the present research, a material balance in non-stationary state was utilized. The model equation for the previously mentioned state, where applying time when a sample was collected and its concentration by means of °Brix, was determined. Obtained data from laboratory analysis and from the model equation application were analyzed with statistical package Statgraphics Centurion XVI.I version XVI 16.1.18 . For each data set compared, no significant differences were found. The established model equation for the determination of the concentration of a substance was useful in this investigation and it can be used in further research works.

ciencia unemi/ciencia unemi (en línea)

Ecuación modelo operacional con aplicación de balance de materia en estado no estacionario.// Operational model equation applying material balance in a non-stationary state.